The sum of the first terms of an arithmetic progression is

MATHEMATICS · Subjective · CBSE · Mathematics · Arithmetic Progressions · Arithmetic Progressions

Problem

The sum of the first

n

terms of an arithmetic progression is

124

. Its first term is

5

and the common difference is

3

. (i) Find the value of

n

. (ii) Hence, determine the

n^{\text{th}}

term of the progression.